Tube-forming and cord-covering machine



H.S.BAGON, TUBE FORMING AND GORD GOVERINGMAGHINB. No. 273,217.

Patented Peb.27,1883.

' vide improved means for bending UNITED STAT S HENRY s. BACON, onMILFORD,

PATENT Orrrce.

MASSACHUSETTS, ASSIGNOB TO THE UNION FASTENING COMPANY, OF JERSEY CITY,NEW'JERSEY.

SPECIFICATION forming part of Letters Patent No. 273,217,

dated February 27, 1883.

Application filed July 27, 1882. (No model.)

To all whom it may concern Be it-known that I, HENRY S. BACON, ofMilford,in the county of Worcester and State of Massachusetts, haveinvented certain Improvements in Tube-Forming and Cord-GoveringMachines, of which the following is a specification.

This invention has for its chief object to proa strip of sheet metal ofindefinite length transversely around a cord to form a tube or metallicenvelope inclosing the cord.

The invention consists in the improved devices which I will tirstdescribe, and then point out in my claims. I 7

0f the accompanying drawings, forming a part of this specification,Figure 1 represents a side elevation of an organized machine embodyingmy improvements. Figs. 2, 3, and A represent, respectively, sections onlines a: :r, y 3 and z 2, Fig. 1. Fi .5 represents a section on line :20as, Fig. 1. Fig. 6 represents a section on line 3 y, Fig. 1.

The same letters of reference indicate the same parts in all thefigures.

The material to be bent into a metal cut into a narrow strip, S.

The machine, as a whole, consists of a guide, G, adapted to guide thestrip before the latter is bent; a pair of rolls, A B, adapted to bendthe strip transversely into a U shape as it emerges from the guide G; aU-shaped guide, H, which holds the bent strip in place laterally afterit leaves the rolls A'B; a cord-guide, J, adapted to guide a cord, L, ofany suitable fibrous material, into the concavity of the U- shapedstrip; a pair of rolls, 0 D, adapted to bend the edges of the U-shapedstrip inwardly and give the strip a tubular form, or approximately so;and preferably one or more pairs of compacting or finishing rolls, E F,adapted to complete the tubular form of the strip,in case it is notcompleted by the rolls 0 D, and press the same closely against the cord,a tubular guide, I, being employed to conduct the strip from the rolls GD to the rolls E F. All the rolls above described are mounted on arborsjournaled in a suitable frame, K, and said arbors aregeared together anddriven by a tube is sheet suitable motor, so as to rotate the rolls, asinwould he liability of the compress the tube.

departing from dicated by the arrows in Fig. 1. The roll A has a groove,to, in its periphery, and the roll B a corresponding flange orprojection, 11, as shown in Fig. 2. The roll 0 has a narrow groovedperiphery, 0, while the roll D has a deep peripheral groove, (Z, intowhich the grooved periphery 0 projects, as shown in Fig. 3, the sides 61d of the groove (1 being inclined outwardly at opposite sides ofthe rollC. These outwardly-inclined sides d (1, bearing against the edges of theU-shaped strip S, are sure to turn said edges inwardly, whereas if thegroove 61 were simply semicircular and terminated at or above theperiphery of the roll 0 there edges of the strip failing to turninwardly, as I have found by practice, the edges of the strip beingsometimes caught by the periphery of the roll 1) outside of the groove(1 and turned outwardly. This cannot happen when the sides of the grooveare extended and inclined outwardly, as shown. The rolls E F simply havecoinciding semicircular grooves ef, as shown in Fig. 4, of such depth asto slightly compress the tube formed by the rolls 0 D. If desired, asecond pair of rolls, E F, may be employed, having grooves of slightlyless depth, so as to still further The guides G H I J are suitablyattached to the frame K, and reels are preferably provided to hold,respectively, a coil of the metal strip S and a coil of the cord L. Thecord-guide J is simply a plate having a perforation through which thecord passes, as shown in Fig. 6. The guide H holds the U-shaped stripwith its concave side uppermost for the reception of the cord.

1 do not limit myself to the employment in all cases of thefinishing-rolls E F, for, if desired, the tubular form of the strip maybe entirely completed by the rolls 0 D; nor do 1 limit myself to theemployment of the rolls A B and (.l D in one and the same structure ororganized machine with the intermediate guides. Each of said pairs ofrolls may perform its function independently of the other without thespirit of my invention.

It is obvious that the rolls may be employed for bending a metal stripinto a tube without the employment of the cord.

The compound article formed by bending a various purposes,

assert sheet-metal strip in the form of a tubular envelope around afibrous cord is adapted for particularly to be cut into short lengthsfor boot and shoe sole fastenings. When used for this purpose the cordshould be saturated or treated with wax or some suitable material, tomake it impervious to water. Said compound article may also be used incontinuous lengths for many of the purposes for which ordinary solidwire is used such as for coarse netting for fences, &c.-its constructiongiving it the qualities of bulk, strength, lightness, and cheapuess.

If desired, the rolls 0 D and E F may be formed as shown in Fig. 4, eachroll having a flange, 1T, projectingiat one side of and beyond thegrooved periphery of the other roll. This form prevents the rolls E F,as they compress the tube, from forming burrs or fins on the peripheryof the tube.

I prefer to provide the grooves cf with dies or ribs g g, as shown inFig. 4*, for the purpose of forming longitudinal indentations in thecompleted tube, as shown I crease its usefulness when cut up intolengths in Fig. 7. Theseiul dentations serve to stitfen the tube and inlgrooves of and flanges i i relatively arranged as shown in Fig. 4,whereby the edges of the strip are bent over the cord in the form of atube, and the formation of burrs or fins 0n the tube is prevented, asset forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 22d day of July, 1882.

HENRY S. BACON.

\Vitnesses:

A. SEAVER, 0. F. BROWN.

